[SDKBOX] what is the difference between Google Play Game Servies and SDKBOX Play?

I was trying to add leaderboard and achievement to android project.
I started with:
Google Play Game Servies
http://www.sdkbox.com/plugins/googleplayservices
but soon after the installation I’m not able to continue…
how can I login for example? it refers to google documentation… should I not use
something like: sdkbox::PluginGPG::gpg()->Achievements();
but I noticed that there is a well documented:
SDKBOX Play
http://www.sdkbox.com/plugins/sdkboxplay
what is the difference?
thanks

If you just want leaderboard & achievements I would recommend using SDKBOX play, since we largely simplified the API

If you want to use advanced features like cloud save and multiplayer features then you can use google play games.

I’ll update the documentation to make it clear.

thanks, always very kind